Opening FQ Files

The FQ file type is primarily associated with FastQC.

FQ	File extension: FQ
	File type:	sequence data file

What is an FQ file?

FQ files mostly belong to FastQC. An FQ file is a FASTQ formatted file used to store DNA sequencing data with quality scores.
It is created by sequencers such as those from Illumina (for example, the MiSeq series) and is a common output in next-generation sequencing projects.
Key points compiled by FilExt.com include:

Sequence Reads: Each entry has a nucleotide sequence from a biological sample.

Quality Scores: Each base call has an accompanying score represented in ASCII to indicate reliability.

Data Format: The file is text-based, but the structured layout is best handled by bioinformatics software.

Usage: Tools like FastQC are used to assess the quality of the sequences. For more details, visit the Illumina website or the FastQC project page.

FilExt.com note: This file format is crucial in the field of genomics for storing and analyzing DNA reads from experiments.

How can I open an FQ file?

You need a suitable software like FastQC to open an FQ file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FQ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FQ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FQ Text Viewer

Choose your .fq file to view

or drag and drop it here

Online File Viewer

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How to extract texts from FQ files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from FQ file or capture a screenshot, you can use our free Online FQ File Viewer:

Just click the "Choose your .fq file to view" button on this page.
Your FQ file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert FQ files:

FastQC
See the previous paragraphs to learn more about the main application. FQ files are often referred to as FastQC data files because this type of file is primarily created or used by this software.
Illumina sequencing platforms, FastQC
Files with the *.FQ extension are predominantly associated with the FASTQ format, a text-based format used for storing biological sequence data, primarily from high-throughput DNA sequencing. These files contain both the nucleotide sequence (reads) and their corresponding quality scores, crucial for downstream analysis. The quality scores represent the probability of an accurate base call, encoded using the Phred quality scale. The widespread use of *.FQ files stems from their adoption by major sequencing platforms like Illumina, making them a standard in genomics research. This file format is classified as Bioinformatics / Genomics.

Technical Data for FQ File Extension

File classification:

Data

Related files:

fastq, fasta, sam, bam, vcf, csfasta, fg, gz, fa, fna, zip, fsa_nt, gbff

Mime type:

text/plain

an fq sequence data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with FQ files

Associate the FQ file extension with the correct application.
Update your software that should actually open sequence data files. Because only the current version supports the latest FQ file format. Search, therefore, e.g. on the manufacturer website after an available FastQC update.
To make sure that your FQ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .FQ file online - secure, fast, and no downloads needed.